Counting System

Special Projects

Model 

Configuration

Power Supply Requirement

NETS-0 MHCL, shown here, has a voltage divider, HV supply and preamplifier with cable driver output stage. It has a PMT base socket in which detector can be directly plugged. The output stage is capable of driving signal through a standard coaxial cable up to a maximum length of 100 meters. This unit requires ±15VDC power. HV supply of 1000 V @ 1mA max. for PMT Detectors is generated internally.
Stainless Steel weatherproof enclosure is optionally available for Detector and NETS-0 MHCL assembly. 

Para Nuclear Spectrometer Model PNS-2 is a micro-controller based, stand alone, Mains operated instrument for NaI(Tl) detector based Gamma Ray Spectroscopy.

PNS-2, along with NaI(Tl) detector of customer’s choice & Model NETS-0, PMT base preamplifier form a complete spectrometry system. This system is suitable for experiments related to absorption studies, half life measurements. This set up is very useful for gross Beta/Gamma counting of environmental samples, with appropriate detector.

Model GSpec is a versatile compact USB based 1024 channel Multi Channel Analyzer based Gamma Spectroscopy System.  GSpec is designed and manufactured indigenously by Para Electronics for 14 pin NaI(Tl) Scintillation Detector based Gamma Spectroscopy.

GSpec is powered by USB interface and includes preamplifier, Spectroscopy Amplifier, High Voltage supply for detector. It also contains 1024 channel 48 MHz Wilkinson ADC with Silab Microcontroller for USB interface with PC for spectrum acquisition and data processing.

Data acquisition software is loaded on PC / Laptop and provides spectrum acquisition and display, spectrum analysis software for energy calibration, ROI selection, area calculation, peak search, peak information, spectrum smoothing and spectrum data storage on PC hard disk. High voltage supply necessary to operate scintillation detector is software programmable from 0 to 1200 volts in 256 steps. Spectroscopy amplifier gain is adjustable by factor of 0 to x10 using local trimpot.

Model 

Configuration

• Acquisition and display of Gamma Spectrum
• Energy Calibration
• ROI selection
• Area Calculation
• Peak information
• Spectrum stabilization & spectrum smoothening
• Data Storage on PC hard disk

  Optional  

  Dimensions  

  Weight  

• NaI(Tl) Detector
• Lead Shield suitable for Detector

NETS-3M is a stand alone Multi Channel Analyser which uses a Wilkinson type 6 MHz ADC, 1024 channels /data Memory with 64 K counts capacity and functional key switches for Data Acquisition, Display and Processing. NETS-3M is equipped with backlit Graphics Liquid Crystal Display (LCD) to monitor data acquisition process. 

NETS-3M is provided with RS232 serial interface for data transfer to a Personal Computer for advanced data processing and spectrum display. 

NETS-3M/U is a 1K Multichannel Analyzer with HV Supply and Spectroscopy Amplifier. It is a mains operated instrument for NaI(Tl) detector based spectroscopy.

NETS3M/U along with NaI(Tl) detector of Customer’s choice and Preamplifier (NETS-0M) form a complete Spectroscopy System. The whole setup has a resolution of around 8%. It is suitable for applications where low resolution of nuclides is acceptable.

NETS-3M/U is ideally suited for Nuclear Spectroscopy experiments carried out at Universities, Environmental Survey Labs and Health Physics Units of Nuclear Power Plants and Chemical Control Labs.  

KeyBoard

Cursor Keys : CURR, CURL, FAST, HOME, MAX, ENTER keys to move the cursor right, left, fast movement and home channel, first peak channel from current position and to set the parameter e.g. Start Channel respectively.

Display Keys : SCLU, SCLD, SCRL, SCRR, EXP, CNT, REFRESH keys to adjust the vertical scale (Up or down), Scroll the screen (left or right), expand the screen or contract the screen, refresh the display respectively.

Function Keys : MODE, SMOTH, TOTAL, CLEAR keys to select the operation mode, Smooth the spectrum, ROI calculations and clear the channel data respectively.
 

In this new version of MCA, user can perform ROI analysis without a need for PC. NETS-3M/U has different modes of operation. In Setup mode, user can set the ROI start and stop channel using Cursor keys. Maximum 10 ROIs can be set at a time.

In Run mode, User can acquire the spectrum and perform peak analysis. ROI integral, background, area, centroid, %error and FWHM are calculated and displayed on the screen.

In calibrate mode, user can calibrate the spectrum. Straight Line method (y=mx + c) is used for calibration. After calibration, energy value is displayed along with channel number.
 

ACCESSORIES

For most of the users, we have supplied NaI(Tl) detector with MCA. Detector size depends upon the application. Usually the size varies from 2”x2” to 5”x3”.

Along with the MCA, we can supply the preamplifier (Model – NETS-0M). The preamplifier has built in Voltage Divider Chain (10 or 12 stage with R=510K) and 2 stage transistor amplifier with emitter follower.

Preset Timer is optionally available with MCA. This Timer has a Real time/Live Time selection switch. In Live mode, the timer stretches the acquisition time to compensate for the Dead time of MCA.

For low activity samples, the background plays important role. For such applications, proper shielding is necessary. Lead shields as per user requirement and application can be supplied.

NETS-3M/U includes Windows based Spectrum Analysis Software package. This software enables user to transfer the acquired spectrum to PC on serial port and carry out the Spectrum Analysis. All the necessary functions such as Spectrum Smoothing, Normalization, Peak Calculations, ROI Set/Reset are part of the software. Other facilities include Spectrum Calibration, Printing and Storage of Spectrum.

This package makes use of real time clock of the PC. User can set the acquisition time and number of runs. After completion of each run, data automatically gets transferred to PC. This feature is useful when the experiment time is in hours.